Expanding a Perc5i Raid5

[Hansjörg Maurer]

Hi

thank you, and sorry for the late reply.
I now have another system with a perc6i available.

I am trying to do so,  and you are right, that the perc6i can handle
multiple virtual disks in one raid5 array.
But it seems that with multiple virtual disks in one array the raid
controller is loosing the ability to expand the VD with additional
physical disks

regards

Hansjörg




Jeremy Cole wrote:
>> It seems, that the perc5i and perc6i controllers are not able  to divide
>> one raid into more than one virtual disks.
>> Therefore I have to create a second raid array (loosing an additional
>> disk for parity) label it with parted as gpt,
>> and than I can expand this disk.
>
> That's not true.  The PERC 5/i is perfectly capable of dividing a RAID
> 5 set into multiple virtual disks.  In fact, this is how I solved your
> problem above.  I installed onto a 6x750GB PE 2950 by making a
> smallish vdisk for boot, and the rest for data.  Install the OS on the
> small one, once Linux is up and running, it could care less about the
> size of other volumes.
>
> major minor  #blocks  name
>
>    8     0   52428800 sda
>    8     1     104391 sda1
>    8     2   52323705 sda2
>    8    16 3607756800 sdb
>    8    17 3607756766 sdb1
>
> sda = ~50GB, MBR partitioned
> sda1 = ~100MB for /boot
> sda2 = ~49.9GB for LVM VG "small"
>
> small/root = ~40GB for /
> small/swap0 = ~2GB for swap
> small/swap1 = ~2GB for swap
>
> sdb = ~3.3TB, GPT partitioned
> sda1 = ~3.3TB for LVM VG "large"
>
> large/data = ~3.3TB for /data
>
>
> You should be able to do something similarly, although I couldn't say
> whether you can do that without re-initializing your disks, as I did
> this from scratch.
>
> Regards,
>
> Jeremy
>

-- 
_________________________________________________________________

Deutsches Zentrum fuer Luft- und Raumfahrt e.V.
in der Helmholtz-Gemeinschaft

Institut fuer Robotik und Mechatronik

Dr. Hansjörg Maurer

LAN- und Systemmanager

Münchner Strasse 20
82234 Wessling
Germany 

Telefon: 08153/28-2431 
Telefax: 08153/28-1134

E-Mail: Hansjoerg.Maurer at dlr.de
Internet: http://www.robotic.dlr.de/

__________________________________________________________________


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